Marzena Gryczewski, APRN
NPI 1548500663 · Family Nurse Practitioner · Newington, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marzena Gryczewski, APRN is a Family Nurse Practitioner provider in Newington, CT (NPI 1548500663).
Provider details
- NPI number
- 1548500663
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 004919 (CT)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
13 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Sertraline Hcl | 26 |
| Levothyroxine Sodium | 15 |
| Amlodipine Besylate | 13 |
| Atorvastatin Calcium | 13 |
| Chlorthalidone | 13 |
| Gabapentin | 13 |
| Latanoprost | 13 |
| Semaglutidebrand: Ozempic | 13 |
| Trazodone Hcl | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$332 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-02-27
- Last updated
- 2023-04-07
- Certified
- 2023-04-07
Frequently asked questions
- What is Marzena Gryczewski's NPI number?
- Marzena Gryczewski's National Provider Identifier (NPI) is 1548500663, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marzena Gryczewski's specialty?
- Marzena Gryczewski is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marzena Gryczewski located?
- Marzena Gryczewski's practice location on file with NPPES is 555 Willard Ave # 506, Newington, CT 06111-2631.
- What is Marzena Gryczewski's phone number?
- The practice phone number listed in the NPPES registry for Marzena Gryczewski is (860) 256-1553.
- Does Marzena Gryczewski accept Medicare?
- Marzena Gryczewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marzena Gryczewski's NPI active?
- Yes — Marzena Gryczewski's NPI (1548500663) is active in the NPPES registry as of the last update on 2023-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.